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APPLICATION FILED MAR: 15, 1920.

Patented Dec. 6, 1921 I nw aimrln.

E. PHINNEY.

SETTING UP MEANS FOR CALCULATING MACHINES.

APPLICATION man MAR. 15. 1920.

lui'cnted Dec. 192i.

13 SHEE'N -SHEET 2 Elm-undo:

PATENT orifice;

31 WEST GRI JQ'GE, JERSEY, ASSIGNOB; T MONROE CALCU- ..s fl-J'fii} CGBTPAKY, 0E GRANGENEW JERSEY, A CORPORATION OF NEW Specification of Letters Patent.

Patented Dec. 6, 1921.

Application filed March 15, 1820. Serial No. 335,970.

sectiori'on the line 2-42, Fig. 1. detail plan View of a pair of .19, with the related selecting eleivention has relation "to means for g the selecting or differential .acelements key-set calculatingf mamil values of the keys actuated, being an i ement upon the device for this puriose sclosed in the reissue patent to Bald- 0. 13,841, and the invention consists toe novel construction and combination parts, as hereinafter set forth.

in? object of the invention is to decrease the number of patterns needed in the seti-l11f11}) means, facilitate the assembling of parts and'to provide for more economical manufacture.

the accompanying drawings, illustratin, an embodiment of the invention, the nuso moral dcs'gnates the selecting or dilferential ac sting elements, arranged in pairs upon e shaft l, and, each member having i of graded lengths, extending toward. ach other, the members of each pair being movable toward each other through the medium of rock bars 19, having; extensions 22 ingg said elements. Varying degrees or movement oi one or bot-h of these selecting elements wili bring different numbers of 6 into position to act upon intermee gears 12, located between said elements chines in accordance with the denomina-' and engaging the gears of registering diais 13, all as described in said patent.

In order to accomplish the movement of said rock bars and members as stated in setting up a problem, the stems of the keys 18 are provided respectively with lower heads 25, each having at one side a cam surface 26 and atthe other side an opposed cam surface 27, the lower cam heads of all of the key stems being of the same pattern. The cam faces 26 and 27 form the lateral walls of recesses 30, within which are located the upper edges of the rock bars 19.

The cam surface 26 is adapted to engage the rock bar member 19 and move said member laterally to move the corresponding selecting element member 5, having five teeth, all of the same length,- a distance which is always the some, to bring the five teeth into play or position for driving ou gagement with the gear 12 whenever said member is actuated.

The cam surface 27 has engagement with the rock bar memb r 19', and moves said member laterally, to" move laterally the corresponding selecting clement member 5, having four teeth, of different lengths, distances which vary according to whethcnthe 1, 2, 3 or 4 key is operated, to bring ntto play or position ior driving engagement with the gear 12, one, two, three or four of the said teeth,an(1 in order to accomplish this result with the uniform cam surface or edge 27 for the 1, :2, 3 and 4 keys, the rock bar 19 is ada ted tocontact with the cam surface 27 at ificrent periods in the movement of the key. In other words, the rock bar 19" is adapted to be actuated by varying fractions of the cam face 27.

That is to say, the four key being operated, the rock bar 19 is adapted to Contact with the cam face 27 throughout the key movement, for a maximum lateral movement ofthe bar 19", to bring all four teeth 6 into play; the key 3 being operated, the bar 19 is adapted to contact with the cam face 27 shortly after the 'key has started to move, to accomplish a lesslateral movement of the bar. 19, to bring three teeth 6 into play; the 2 key being operated, the bar 19 1s adapted to. contact with the cam face 27 at-a point nearer the end of the key movement, to accomplish a still less movement of the bar 19, to bring two teeth 6 into play, and the 1 key being operated, the bar '19? is adapted to contact with the cam face 27 near the upper end of said face, whereby the bar 19* is moved laterally only a short distance, to brin one tooth 6 only into play,

To t is end,'in the present embodiment, the rock bar member 19" is provided at one end portion thereof with a series of five in s portion thereof with a series of lugs f, g, h

and/i, of the same extent or degree as the lugs b, c, d and e, and providing similarly related contacting points but located respectively opposite the iespective lugs a of the other rock bar member, with the exception of the first lug a, which is engaged by the 5 key. The lugs 71, c, d and e of the rock bar member 19 and the remaining lugs a of the member 19* are engaged in pairs respectively by the, 6, 7, 8 and 9 keys, the cam surfaces 26 and 27 of the key stems both acting.

.The lugs or extensions a are in line with the rock bar 19", and are engaged throughout the movement of the key, by the cam 26, the showing being similar to that of the reissue patent stated. The lugs or extensions and f are located in line with the bar 19", but under the higher or upper end portion of the cam surface 27 of the related key and engaged thereby at the end portion of the key stroke. The series of lugs or extensions 0, a? and e, and y, it and are bent laterally out of line with the bar 19 to an increasing extent.

The rock bar members 19 andl9 are made in two patterns, one for each member, and the key stems in one pattern, as stated, whereas formerly it was necessary to make the key stems of nine differing patterns, the assembling of the parts being accordingly complicated and increasing the expense of manufacture. j

It is obvious that the rock bar members 19 and 19 may be provided with continuous differential contact faces or edges, instead of being cut away to form the lugs or extensions stated. i

5 claim: v

1. In a calculatingmachine having a dii t n-ential actuating'element, a series of de incense nominational keys having a common degree of operative movement, and means for setting up said element by the o eration of any key, including cam heads al of the same pattern for the stems of said keys, and a. movable member adapted for differential actuation by varying fractions of the cam faces of said heads.

2. In a calculatin machine having differential actuating e emcnts, a series of denominational keys for each of said elements, said keys having a common degree of operative movement, and means for setting up each element by the operation of any member of the related series of keys, including cam heads all of the same pattern for the stems of said keys, and a set of movable members for each element, each set being of the same pattern and adapted for differential actuation by varying fractions of the cam faces of said heads.

3. In a calculating machine having differential actuating elements, a series of clenomb national keys, and means for setting up said elements by the operation of said keys, including heads for the stems of said keys all of the same pattern and having each opposed cam faces, and rocking members for each said element adapted fordiilerential actuation by the cam faces of said heads.

In a calculating machine having differential actuating elements, a series of denominational keys for each. of said elements, and means for setting up each element by the operation of a member of the related series of keys, including cam heads all of the same pattern for the stems of the keys, and two rocking members for each element and adapted for differential actuation by the cam faces of said heads. v

5. In a calculating machine having differential actuating elements, a series composed of denominational keys having a common degree of operative movement, and means for setting up said elements by the operation of said keys, including heads for the stems of said keys all of the same pattern and having each opposed cam faces, and rocking members for each said element adapted for differential actuation by varying fractions of the cam faces of said heads.

6. In a calculating machine having a differential actuating element, a series of denominational keys, and means for setting up said element by the operation of any key, including cam heads all of the same pattern for the stems of said keys, and a rocking member having contacting points for cam heads of varying angular relation to th\ axis of said member.

7. In a calculating machine having differential actuating elements, a series of denominational'keys for each of said elements, said k h i a Common degree 15 p ti ing angular :eiation "50 she axis eff safl movement, and means fo r setting up each b element by the operation of any member of In t s i y whel'fiof 316513 y $311235? the related series of keys, including cam in presence of two wiinesses.

heads all of the same pattern for the stems EBGAR E r of saw] keys, and a set of roekmg members for eavh element. each set being of the same itnesses pattern and including a member having con- L D, SAGGART, tacting points for said cam heads of vary- E; G. Bmmmr, J21. 

